Astronomy honors unit 1 Appolloni

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What is the summer solstice?
What is the summer solstice?
June 21st. Ecliptic where sun is at its northernmost point and hitting the tropic of cancer
Winter Solstice?
Winter Solstice?
When sun is directly hitting tropic of capricorn and southernmost in the sky
Vernal equinox?
Vernal equinox?
Sun is directly hitting equator. Every place on earth has equal night and day
Autumnal equinox?
Autumnal equinox?
Sun is directly hitting equator. Every place on earth has equal night and day
What is Revolution?
one body orbits another
What is Rotation?
body spins on its axis
Precession?
rotation of the earth’s axis. 1 Full rotation 26,000
Astronomical Unit?
Distance from sun to earth (93 million miles)
Two things which change to precession?
In 13,000 years summer constellations will be in winter
Light Year?
Distance light travels in a year.
4,230,000,000 scientific notation?
4.23×10^9
178,900 in scientific notation?
1.78×10^6
When to use AU?
planet to planet (medium distance)
What part of earth receives the most radiation?
The tropic regions
When to use light year?
big distances like galaxys
What is tidal locking?
When a body’s rotation and revolution periods match
You are standing on the Tropic of Capricorn on the Vernal
Equinox.What direction would your shadow be
cast?
shadow is south
You are standing on the Equator on the Autumnal Equinox. What direction would your shadow be cast?
shadow is below
What is a lunar month? How long?
Length of time it takes for moon to go through phases. (29 days)
What is a sidereal month? How long?
How long it takes for moon to revolve around the earth. (27 days)
How do you figure out how many degrees does the moon
progresses every day?
360 in an orbit divided by the # of days it takes for the moon to revolve around the sun.
360
—– = 13 degrees per day
27
What causes Earth’s seasons?
The axis’s tilt
What part of the Earth receives the least radiation?
The poles
What is a blue moon?
2nd full moon in a month
Can a blue moon be in February ever?
Yes, in leap year
What is a solar eclipse? What does it look like?
sun–>moon> shadow– earth
What is a lunar eclipse? What does it look like?
sun–> earth> shadow–moon
For each of the
solstices/equinoxes, how many hours of sunlight/darkness does the Arctic Circle receive?
Arctic Circle Sunlight Darkness
Summer 24 0
Winter 0 24
Autumn 12 12
Vernal 12 12
For each of the solstices/equinoxes, how many hours of sunlight/darkness does the Antarctic Circle receive.
Antarctic Circle Sunlight Darkness
Summer 0 24
Winter 24 0
Autumn 12 12
Vernal 12 12
What latitude are the tropics located at? Why are they
located there?
cancer 23.5n > Due to earths
Capricorn 23.5s > tilt at 23.5 degree
Why do we only see one side of the moon?
Tidal locking
What is the speed of light in m/s?
3×10^8 m/s
When does your Zodiac Constellation show up in the sky?
May shows up 6 months after birthday month
Draw an Earth with 5 latitude
lines. Label the Tropic of Cancer, Tropic of Capricorn, Equator, Arctic Circle, and Antarctic Circle.
Arctic Circle 66.3 degrees N
Cancer 23.5 degrees north
Equator 0
Capricorn 23.5 degrees s
Antarctic circle 66.3 degrees S
When to use meters?
small distances, like things on earth.
Categories: Astronomy